OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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* edma_test.c
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*- X) l2 r( d" S3 Y/ d, J4 k
* brief EDMA3 Test Application; z+ h# D2 ~( Q+ n
*
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* This file contains EDMA3 Test code.2 }- H. `1 }5 r% y
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE., y& R5 ^; n. O; j. S
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or- f8 t# _9 t) h7 H) Z4 l5 Z
* modify it under the terms of the GNU General Public License as/ P/ h$ }7 {! X8 `5 T
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) g* o; H, t1 X" I9 \9 Y
* kind, whether express or implied; without even the implied warranty6 g$ i8 J; L8 g. x+ [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( E$ Z9 C I* w; F2 w3 ] E. {
* GNU General Public License for more details.
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#include <linux/module.h>$ S+ W2 a ?3 n
#include <linux/init.h>/ g5 x J- @( N3 [- B5 [) ^( ?
#include <linux/errno.h>+ b" z7 l2 S3 R2 T
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>, v2 Y3 G/ f6 g. t4 o/ Q
#include <linux/moduleparam.h>) P, D: C' W9 V W5 V( S
#include <linux/sysctl.h>
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#include <linux/mm.h>) L$ d9 K6 i$ H% j; B! n5 m& g6 A) ?
#include <linux/dma-mapping.h>
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#include <mach/memory.h>6 g4 q" _4 ^+ Q& Z$ S0 d/ w) B
#include <mach/hardware.h>" \7 y5 ^1 e8 [ I1 f
#include <mach/irqs.h> W) {2 S# |& g
#include <asm/hardware/edma.h>3 F. q0 D2 _7 n/ A
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#undef EDMA3_DEBUG: f4 k% { m) V* ^2 V
/*#define EDMA3_DEBUG*/# P% p! L3 A! r1 |. O
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' H0 d/ Z. H& |/ j K
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 \5 Q; d' M) {$ X9 z! J( O7 D
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). A, Z2 u K' j( M+ ?( Y. ]0 X1 N7 h
#else
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#define DMA_PRINTK( x... )' B8 X0 ?9 _; L( m- Q9 r, S
#define DMA_FN_IN
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#define DMA_FN_OUT7 D! X! T+ q3 i4 s/ a
#endif1 I" j9 h! T$ ~' h
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)3 O- r/ h. Q7 q4 f) [* y
#define STATIC_SHIFT 34 R* t! ^# S4 o! _# e6 L
#define TCINTEN_SHIFT 20: }# P3 j2 W8 i4 g+ b5 N; Q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 228 ^/ }. d, ?4 J2 Y
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 X6 {+ r$ q# t- ~; Z) K0 n
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& t7 l7 n; U9 |4 K+ g( R
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" w0 D0 [/ ^( D; b3 f2 F
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dma_addr_t dmaphyssrc1 = 0;) o: Y! q: K6 x# a0 n" f6 L
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;5 k& H2 @3 k- E7 [5 w. ]
char *dmabufdest2 = NULL;, w' |/ Q! a. t/ a
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static int acnt = 512;$ D$ b# w: o+ K1 Q6 d
static int bcnt = 8;
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static int ccnt = 8;' J: a% @0 A! s; }7 E
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module_param(acnt, int, S_IRUGO);% E! b' Z4 |: L4 C
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动